Updated July 2026 · by Jeff, pilot and builder of Zeekin Around
The drill-them-cold blocks: every memory acronym, the V-speed table, and the weight & balance method. Built for the night before, and the parking lot outside the DPE's office.
The preflight chain
The acronyms below are easier to hold onto once you can see where each one fires. This is the order they run in, from deciding to fly to the last chance to call it off.
Reading it: the chain runs pilot → aircraft → planning → risk → walkaround → passengers. A red flag at any box stops the flight; there is no step that a later step makes up for.NWKRAFT is one mnemonic (91.103), split here because weather and NOTAMs drive whether the route is worth planning at all.
Four wedges cover every VFR minimum in 91.155. Find the class, read the code. Class A is IFR only.
Codes: visibility in SM, then cloud clearance above / below / horizontal.5-111: 5 SM · 1,000 · 1,000 · 1 SM 3-152: 3 SM · 1,000 · 500 · 2,000 1-152: 1 SM, same clearancesDashed line is 1,200 AGL. Class A is IFR only, with no VFR minimums.
Dimensions, equipment, and the Special VFR exception live on the National Airspace System task page.
V-speeds
Weight & balance method
List each station's weight: empty aircraft, front seats, rear seats, baggage, fuel (gal × 6 lb for 100LL).
Multiply weight × arm = moment for each station.
Sum the weights; sum the moments.
Total moment ÷ total weight = CG.
Confirm weight is at or under max gross and CG is inside the envelope at that weight; check the envelope, not just the numbers.
Worked scenarios (including the over-gross trap case) live on the Performance & Limitations task page.
Study strategy (spaced repetition, chair flying, aircraft-specific numbers) lives on the How to Prepare page.